[R] uniroot() problem

[megh]

I have a strange problem with uniroot() function. Here is the result :

> uniroot(th, c(-20, 20))
$root
[1] 4.216521e-05

$f.root
[1] 16.66423

$iter
[1] 27

$estim.prec
[1] 6.103516e-05

Pls forgive for not reproducing whole code, here my question is how "f.root"
can be 16.66423? As it is finding root of a function, it must be near Zero.
Am I missing something?

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